Sanitation activists today observed 'World Toilet Day' on Tuesday, Nov 19 and alleged that 3.75 crore lavatories in India are missing. The allegation contradicts claim made by the Ministry for Rural Development. Activists of Right to Sanitation (RTS) Campaign's India chapter demanded an inquiry into the "huge gap" in the number of toilets existing on the field and the number provided in the data by the Ministry and Census 2011.